panic: sleep: syz-executor[56113] slept inside a no-sleep walk bracket (raw pointer held across sleep, wmesg "getblk") Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND 127541 28150 0 0x40 0 1 syz-executor *384139 56113 0 0 0x4000010 0K syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84d8d160) at panic+0x270 sys/kern/subr_prf.c:198 sleep_setup(ffff800001bcf880,11,ffffffff84692e40) at sleep_setup+0x3b2 sys/kern/kern_synch.c:296 tsleep_nsec(ffff800001bcf880,11,ffffffff84692e40,ffffffffffffffff) at tsleep_nsec+0x29c sys/kern/kern_synch.c:153 getblk(ffff800000d8e000,65560,4000,0,ffffffffffffffff) at getblk+0x23a sys/kern/vfs_bio.c:882 bread(ffff800000d8e000,65560,4000,ffff80003bb83920) at bread+0x47 bio_doread sys/kern/vfs_bio.c:295 [inline] bread(ffff800000d8e000,65560,4000,ffff80003bb83920) at bread+0x47 sys/kern/vfs_bio.c:340 ffs_update(ffff800001d6bbe8,1) at ffs_update+0x3e4 sys/ufs/ffs/ffs_inode.c:91 ffs_truncate(ffff800001d6bbe8,0,0,ffffffffffffffff) at ffs_truncate+0x12f0 sys/ufs/ffs/ffs_inode.c:-1 ufs_inactive(ffff80003bb83d00) at ufs_inactive+0x2cb sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(ffff800001c46898,ffff800033703248) at VOP_INACTIVE+0x1bb sys/kern/vfs_vops.c:498 vrele(ffff800001c46898) at vrele+0x16a sys/kern/vfs_subr.c:845 ktrsettrace(ffff8000299179d0,80000814,ffff800001d42bf0,ffff800000119478) at ktrsettrace+0x16c sys/kern/kern_ktrace.c:123 ktrops(ffff800033703248,ffff8000299179d0,0,80000814,ffff800001d42bf0,ffff800000119478) at ktrops+0x338 sys/kern/kern_ktrace.c:578 doktrace(ffff800001d42bf0,4,814,0,ffff800033703248) at doktrace+0xa72 ktrsetchildren sys/kern/kern_ktrace.c:607 [inline] doktrace(ffff800001d42bf0,4,814,0,ffff800033703248) at doktrace+0xa72 sys/kern/kern_ktrace.c:522 end trace frame: 0xffff80003bb841f0, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: sleep: syz-executor[56113] slept inside a no-sleep walk bracket (raw pointer held across sleep, wmesg "getblk") ddb{0}> show kasan kasan: no report recorded this boot ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84d8d160) at panic+0x270 sys/kern/subr_prf.c:198 sleep_setup(ffff800001bcf880,11,ffffffff84692e40) at sleep_setup+0x3b2 sys/kern/kern_synch.c:296 tsleep_nsec(ffff800001bcf880,11,ffffffff84692e40,ffffffffffffffff) at tsleep_nsec+0x29c sys/kern/kern_synch.c:153 getblk(ffff800000d8e000,65560,4000,0,ffffffffffffffff) at getblk+0x23a sys/kern/vfs_bio.c:882 bread(ffff800000d8e000,65560,4000,ffff80003bb83920) at bread+0x47 bio_doread sys/kern/vfs_bio.c:295 [inline] bread(ffff800000d8e000,65560,4000,ffff80003bb83920) at bread+0x47 sys/kern/vfs_bio.c:340 ffs_update(ffff800001d6bbe8,1) at ffs_update+0x3e4 sys/ufs/ffs/ffs_inode.c:91 ffs_truncate(ffff800001d6bbe8,0,0,ffffffffffffffff) at ffs_truncate+0x12f0 sys/ufs/ffs/ffs_inode.c:-1 ufs_inactive(ffff80003bb83d00) at ufs_inactive+0x2cb sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(ffff800001c46898,ffff800033703248) at VOP_INACTIVE+0x1bb sys/kern/vfs_vops.c:498 vrele(ffff800001c46898) at vrele+0x16a sys/kern/vfs_subr.c:845 ktrsettrace(ffff8000299179d0,80000814,ffff800001d42bf0,ffff800000119478) at ktrsettrace+0x16c sys/kern/kern_ktrace.c:123 ktrops(ffff800033703248,ffff8000299179d0,0,80000814,ffff800001d42bf0,ffff800000119478) at ktrops+0x338 sys/kern/kern_ktrace.c:578 doktrace(ffff800001d42bf0,4,814,0,ffff800033703248) at doktrace+0xa72 ktrsetchildren sys/kern/kern_ktrace.c:607 [inline] doktrace(ffff800001d42bf0,4,814,0,ffff800033703248) at doktrace+0xa72 sys/kern/kern_ktrace.c:522 sys_ktrace(ffff800033703248,ffff80003bb84380,ffff80003bb842e0) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:563 syscall(ffff80003bb84380) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb84380) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf50df6d3760, count: -17 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003bb833d0 rbx 0xffff80003bb83440 rdx 0 rcx 0xffffffff851e9ff0 cpu_info_full_primary+0x1ff0 rax 0xffff80000016cb00 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003bb82fe8 r11 0xffffffff83e54b70 x86_bus_space_io_read_1 r12 0xffffffff84d8d160 .str.9 r13 0xffffffff851eac08 cpu_info_full_primary+0x2c08 r14 0xffffffff851eae07 cpu_info_full_primary+0x2e07 r15 0x1 rip 0xffffffff82f1b577 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003bb833d0 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=384139 pid=56113 tcnt=2 stat=onproc flags process=0 proc=4000010 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800033702fb0,0xffff800033702030 process=0xffff800045ff84e8 user=0xffff80003bb79000, vmspace=0xffff800001c74208 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 28150 127541 31555 0 7 0x40 0 syz-executor 31555 291439 86291 0 3 0x82 0 ppwait syz-executor 97112 273128 83031 0 2 0 0 syz-executor 97112 465780 83031 0 3 0 0x4000080 fsleep syz-executor 97112 406469 83031 0 2 0 0x4000000 syz-executor 29662 126385 12905 0 2 0 0 syz-executor 29662 228770 12905 0 3 0 0x4000080 fsleep syz-executor 29662 397907 12905 0 2 0 0x4000000 syz-executor 74063 504861 88323 0 3 0 0x80 nanoslp syz-executor 74063 16762 88323 0 3 0 0x4000080 kqread syz-executor 56113 281396 84599 0 2 0 0 syz-executor *56113 384139 84599 0 7 0 0x4000010 syz-executor 4399 181526 92728 0 3 0 0x80 nanoslp syz-executor 4399 438530 92728 0 3 0 0x4000080 piperd syz-executor 4399 6406 92728 0 3 0 0x4000080 fsleep syz-executor 15953 324845 70953 0 3 0x100002 0x80 sbwait arp 70953 80151 38024 0 3 0x100002 0x88 sigsusp sh 38024 516231 86291 0 3 0x2 0x80 wait syz-executor 88323 354403 86291 0 3 0x2 0x80 nanoslp syz-executor 12905 69242 86291 0 3 0x2 0x80 nanoslp syz-executor 92728 428823 86291 0 3 0x2 0x80 nanoslp syz-executor 84599 390157 86291 0 3 0x2 0x80 nanoslp syz-executor 83031 484046 86291 0 3 0x2 0x80 nanoslp syz-executor 2515 226366 86291 0 2 0x2 0 syz-executor 86291 290981 66043 0 3 0x2 0x80 kqread syz-executor 66043 247362 73203 0 3 0x100002 0x88 sigsusp ksh 73203 114252 28523 0 3 0x10 0x88 kqread sshd-session 28523 434087 96702 0 3 0x12 0x80 kqread sshd-session 69249 375706 1 0 3 0x100003 0x80 ttyin getty 96702 184249 1 0 3 0 0x88 kqread sshd 42378 277408 20640 74 3 0x1100012 0x80 bpf pflogd 20640 85188 1 0 3 0 0x80 sbwait pflogd 40958 86559 2852 73 3 0x1100010 0x80 kqread syslogd 2852 301850 1 0 3 0x100002 0x80 sbwait syslogd 78267 216514 1 0 3 0x100000 0x80 kqread resolvd 57018 272746 1369 77 3 0x100012 0x80 kqread dhcpleased 70292 88277 1369 77 3 0x100012 0x80 kqread dhcpleased 1369 510398 1 0 3 0 0x80 kqread dhcpleased 39069 322022 0 0 3 0x14000 0x200 bored smr 11849 58430 0 0 2 0x14000 0x200 zerothread 41218 243349 0 0 3 0x14000 0x200 aiodoned aiodoned 93654 299406 0 0 3 0x14000 0x200 syncer update 22897 159184 0 0 3 0x14000 0x200 cleaner cleaner 28190 477814 0 0 3 0x14000 0x200 reaper reaper 42511 24550 0 0 3 0x14000 0x200 pgdaemon pagedaemon 58069 265721 0 0 3 0x14000 0x200 bored viomb 22983 221727 0 0 3 0x14000 0x40000200 acpi0 acpi0 66208 416836 0 0 3 0x14000 0x40000200 idle1 55960 367451 0 0 3 0x14000 0x200 bored softnet1 11911 511816 0 0 2 0x14000 0x200 softnet0 60488 9301 0 0 3 0x14000 0x200 bored systqmp 80585 15708 0 0 3 0x14000 0x200 bored systq 56502 492508 0 0 3 0x14000 0x200 tmoslp softclockmp 47759 518651 0 0 3 0x14000 0x40000200 tmoslp softclock 11344 375913 0 0 3 0x14000 0x40000200 idle0 1 71304 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 56113 (syz-executor) thread 0xffff800033703248 (384139) Process 2515 (syz-executor) thread 0xffff800029894f98 (226366) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11052 12244K 12463K 166960K 12219 0 pcb 17 24K 24K 166960K 24 0 rtable 201 10K 12K 166960K 333 0 pf 32 21K 24K 166960K 51 0 ifaddr 37 10K 11K 166960K 45 0 ifgroup 51 2K 2K 166960K 62 0 sysctl 1 1K 13K 166960K 5 0 counters 68 42K 43K 166960K 74 0 ioctlops 0 0K 4K 166960K 1493 0 iov 0 0K 16K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1359 87K 88K 166960K 1478 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 18 65K 93K 166960K 194 0 proc 71 128K 177K 166960K 548 0 subproc 72 9K 9K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 in_multi 78 5K 6K 166960K 89 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 49 344K 344K 166960K 49 0 exec 0 0K 2K 166960K 380 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 222 236K 257K 166960K 3522 0 UVM aobj 10 4K 4K 166960K 10 0 pinsyscall 1068 1744K 1745K 166960K 1344 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 11 0K 1K 166960K 28 0 temp 35 9162K 9182K 166960K 4286 0 kqueue 13 40K 57K 166960K 44 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 32 0 28 1 0 1 1 0 8 0 rtentry 176 105 0 13 5 0 5 5 0 8 0 unpcb 144 83 0 66 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 15 0 10 1 0 1 1 0 8 0 arp 136 18 0 2 1 0 1 1 0 8 0 inpcb 328 96 0 87 2 0 2 2 0 8 0 nd6 152 22 0 4 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 22 0 0 1 0 1 1 0 8 0 pfstkey 128 22 0 0 1 0 1 1 0 8 0 pfstate 448 22 0 0 3 0 3 3 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 413 0 46 26 0 26 26 0 8 1 art_table 40 414 0 46 5 0 5 5 0 8 0 art_node 32 105 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 72 5 0 0 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1666 0 197 92 0 92 92 0 8 0 ffsino 296 1666 0 197 114 0 114 114 0 8 0 nchpl 144 1938 0 238 64 0 64 64 0 8 0 vnodes 216 1859 0 0 104 0 104 104 0 8 0 namei 1024 6112 0 6111 2 0 2 2 0 8 1 percpumem 16 53 0 3 1 0 1 1 0 8 0 kstatmem 264 31 0 6 2 0 2 2 0 8 0 scxspl 216 7056 0 7056 4 3 1 3 1 8 1 plimitpl 152 35 0 18 1 0 1 1 0 8 0 sigapl 424 510 0 462 7 0 7 7 0 8 0 knotepl 120 123 0 0 4 0 4 4 0 8 0 kqueuepl 224 48 0 38 1 0 1 1 0 8 0 pipepl 344 140 0 112 3 0 3 3 0 8 0 fdescpl 528 494 0 462 3 0 3 3 0 8 0 filepl 160 2024 0 1810 13 0 13 13 0 8 3 lockfpl 104 52 0 50 1 0 1 1 0 8 0 lockfspl 48 25 0 23 1 0 1 1 0 8 0 sessionpl 144 32 0 22 1 0 1 1 0 8 0 pgrppl 48 41 0 23 1 0 1 1 0 8 0 ucredpl 104 155 0 141 1 0 1 1 0 8 0 zombiepl 144 462 0 462 1 0 1 1 0 8 1 processpl 1232 510 0 462 5 0 5 5 0 8 0 procpl 664 608 0 552 6 0 6 6 0 8 1 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 752 211 0 181 5 0 5 5 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mextrefs 64 24 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 179 0 0 12 0 12 12 0 8 0 bufpl 272 2390 0 105 153 0 153 153 0 8 0 anonpl 32 3836 0 0 31 0 31 31 0 222 0 amapchunkpl 152 9896 0 9469 20 0 20 20 0 158 2 amappl16 200 1947 0 1925 5 1 4 5 0 8 2 amappl15 192 41 0 41 2 1 1 1 0 8 1 amappl14 184 427 0 425 1 0 1 1 0 8 0 amappl13 176 128 0 115 1 0 1 1 0 8 0 amappl12 168 740 0 709 2 0 2 2 0 8 0 amappl11 160 5 0 5 3 2 1 1 0 8 1 amappl10 152 68 0 54 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 1 0 1 0 8 0 amappl8 136 99 0 97 1 0 1 1 0 8 0 amappl7 128 142 0 128 1 0 1 1 0 8 0 amappl6 120 154 0 152 1 0 1 1 0 8 0 amappl5 112 131 0 121 1 0 1 1 0 8 0 amappl4 104 306 0 284 1 0 1 1 0 8 0 amappl3 96 1824 0 1721 3 0 3 3 0 8 0 amappl2 88 536 0 473 2 0 2 2 0 8 0 amappl1 80 10626 0 9993 15 0 15 15 0 8 0 amappl 88 2790 0 2644 4 0 4 4 0 92 0 uvmvnodes 80 102 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 494 0 462 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 494 0 462 1 0 1 1 0 8 0 vmmpekpl 168 6126 0 6090 2 0 2 2 0 8 0 vmmpepl 168 40848 0 38936 89 0 89 89 0 357 2 vmsppl 488 493 0 462 5 0 5 5 0 8 0 rwobjpl 80 15207 0 14147 25 0 25 25 0 8 0 pdppl 4096 996 0 924 98 24 74 86 0 8 2 pvpl 32 9807 0 0 81 1 80 80 0 265 0 pmappl 256 493 0 462 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 120 422 0 27 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84d8d160) at panic+0x270 sys/kern/subr_prf.c:198 sleep_setup(ffff800001bcf880,11,ffffffff84692e40) at sleep_setup+0x3b2 sys/kern/kern_synch.c:296 tsleep_nsec(ffff800001bcf880,11,ffffffff84692e40,ffffffffffffffff) at tsleep_nsec+0x29c sys/kern/kern_synch.c:153 getblk(ffff800000d8e000,65560,4000,0,ffffffffffffffff) at getblk+0x23a sys/kern/vfs_bio.c:882 bread(ffff800000d8e000,65560,4000,ffff80003bb83920) at bread+0x47 bio_doread sys/kern/vfs_bio.c:295 [inline] bread(ffff800000d8e000,65560,4000,ffff80003bb83920) at bread+0x47 sys/kern/vfs_bio.c:340 ffs_update(ffff800001d6bbe8,1) at ffs_update+0x3e4 sys/ufs/ffs/ffs_inode.c:91 ffs_truncate(ffff800001d6bbe8,0,0,ffffffffffffffff) at ffs_truncate+0x12f0 sys/ufs/ffs/ffs_inode.c:-1 ufs_inactive(ffff80003bb83d00) at ufs_inactive+0x2cb sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(ffff800001c46898,ffff800033703248) at VOP_INACTIVE+0x1bb sys/kern/vfs_vops.c:498 vrele(ffff800001c46898) at vrele+0x16a sys/kern/vfs_subr.c:845 ktrsettrace(ffff8000299179d0,80000814,ffff800001d42bf0,ffff800000119478) at ktrsettrace+0x16c sys/kern/kern_ktrace.c:123 ktrops(ffff800033703248,ffff8000299179d0,0,80000814,ffff800001d42bf0,ffff800000119478) at ktrops+0x338 sys/kern/kern_ktrace.c:578 doktrace(ffff800001d42bf0,4,814,0,ffff800033703248) at doktrace+0xa72 ktrsetchildren sys/kern/kern_ktrace.c:607 [inline] doktrace(ffff800001d42bf0,4,814,0,ffff800033703248) at doktrace+0xa72 sys/kern/kern_ktrace.c:522 sys_ktrace(ffff800033703248,ffff80003bb84380,ffff80003bb842e0) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:563 syscall(ffff80003bb84380) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb84380) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf50df6d3760, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028fe3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85d51b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85d51b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 syscall(ffff800035b18ee0) at syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff800035b18ee0) at syscall+0x1048 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2a0b3cee50, count: 9 ddb{1}> trace x86_ipi_db(ffff800028fe3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85d51b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85d51b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 syscall(ffff800035b18ee0) at syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff800035b18ee0) at syscall+0x1048 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2a0b3cee50, count: -6